DHT

Diversified Heat Transfer, known throughout the trade as DHT, has spent more than 80 years engineering heat exchange equipment for residential, commercial, and industrial heating systems. The company expanded its reach in 2022 by acquiring Sussman Electric Boilers, a manufacturer with a century of history in electric steam and hot water boiler production, broadening DHT's combined catalog of heat transfer technology.

Product Lines

DHT's core product range includes water heaters, heat exchangers, steam generators, and HVAC coils for both residential and commercial systems. On SupplyHouse, the brand is best known for replacement tankless coils sized to fit boilers from manufacturers including Burnham, Weil-McLain, Peerless, Utica, and Slant Fin, along with anode rods for Techtanium indirect water heaters.

Why Contractors Specify DHT

Replacing a tankless coil or anode rod on an aging boiler often comes down to finding a part that fits the original equipment manufacturer's coil pocket and connection pattern without retrofitting the whole unit. DHT's coil line covers a wide span of legacy boiler series, which lets a service technician source a direct-fit replacement instead of fabricating a workaround. The Sussman acquisition also means DHT now backs electric boiler and steam generator lines with the same long-running parts and engineering support contractors already associate with the brand.

How to Choose DHT Products

Tankless coil selection depends on matching the coil to the specific boiler series and model, since coil dimensions, gallon capacity, and connection placement vary across manufacturers and even across boiler generations from the same brand. Technicians should confirm boiler model and series from the data plate before ordering, then cross-reference that information against the coil's listed compatibility. For indirect water heater anode replacement, matching the anode rod to the specific Techtanium model protects the tank from corrosion and extends service life.

Frequently Asked Questions

What is a tankless coil used for?

A tankless coil sits inside a boiler and uses the boiler's heat to produce domestic hot water on demand, without a separate storage tank.

How does a technician confirm the correct DHT coil for a boiler?

Matching starts with the boiler manufacturer, series, and model listed on the unit's data plate, then cross-referencing that information against the coil's published fit list.

What boilers does DHT make tankless coils for?

DHT coils are manufactured to fit numerous legacy and current boiler series from brands including Burnham, Weil-McLain, Peerless, Utica, and Slant Fin.

Why does an indirect water heater need an anode rod?

An anode rod sacrifices itself to corrosion in place of the tank's steel lining, so replacing a depleted rod protects the tank and extends its working life.

What happened to Sussman Electric Boilers?

Sussman Electric Boilers' assets and personnel were acquired by Diversified Heat Transfer in 2022, adding electric steam and hot water boiler lines to DHT's product range.